elementary single fin/finbox question

General Discussion
1

Aloha single fin lovers

I have a simple question – just got a new single fin, and I am trying to wrestle the damn fin into the box. It just barely fits in but the fit is so tight that I can’t slide the fin up or back in the box.

Any suggestions?

Thank you – enjoy the glide – and beware of the post-rain brown tide. Northern CA is big (15’ faces or so) and lumpy this morning…

Kit

2

for some reason or another, most cheap (mass produced, plastic molded) fins just don’t quite fit in the box. you need to grind down either side to get it in there. most better fins (rainbow, island fin design, etc.) come already ground down to fit the box (the grinder marks are visible), but cheaper fins don’t. if you got a cheap fin, i’m sure this is the problem. if not, they probably just skipped the grinding. either way, if you don’t have the tools to take it down yourself, just swing by your local shaper…it’ll take about 30 seconds and i’m sure he won’t mind.

3

thanks for the reply – I should have specified that the fin is a fiberglass Fins Unlimited fin. I’ll dust off the grinder and have at it…

4

Check the box AND the fin. The fin should be 0.350 inches thick, the finbox 0.375. If the fin is the correct width (and I’d bet it is), you want to sand or file down the sides of the box instead. If you don’t have calipers, try the fin in someone else’s box to get an idea if it is the fin or box.

5

I agree with blakestah. I find that this is usually because the box was installed to hot and deformed slightly. Gotta go easy on the catalyst because of the mass involved.

6

you’re talking about a single fin for a short or a long?

please reply however it’s not mind the argument…